Not only interested in the football but beginning to show an interest in it.A. the teach

问题补充：

Not only interested in the football but beginning to show an interest in it.

A. the teacher himself is; all his students are;

B. the teacher himself is; are all his students;

C. is the teacher himself; are all his students;

D. is the teacher himself; all his students are;

答案：

A. the teacher himself is; all his students are;

B. the teacher himself is; are all his students;

C. is the teacher himself; are all his students;

(答案→)D. is the teacher himself; all his students are;

解析：从句子语境可知句意：不但这位老师自己对足球感兴趣，而且他的学生们也开始对足球感兴趣。Not only属于否定词，而且谓语句子开头，要求句子部分倒装。